LME75.811A1PKG-PRG2 Siemens Flame Safeguard

Overview

The Siemens LME75.811A1PKG-PRG2 is a high-performance burner control package designed for the supervision and commissioning of 1-stage or modulating forced draft burners. Engineered for continuous operation (uninterrupted for more than 24 hours), this flame safeguard unit ensures maximum safety by monitoring gas or oil flames using self-checking UV scanners, infrared scanners, or flame rods. The package simplifies installation by bundling the LME75.000A1 base unit with the PME75.811A1 program module and a complete plug-and-socket kit.

Features

• Self-checking mechanism designed for continuous burner operation exceeding 24 hours
• Integrated valve proving function to ensure gas train integrity before each start
• Programmable actuator control via 3-position step, analog signals, or PWM for precise fuel-air ratio modulation
• Multi-color LED status lamp and BC interface for connection to external displays or cloud gateways
• Digital signal handling for high-accuracy control sequences and repeatable timing
• SIL3 capable classification, making it suitable for high-demand industrial safety applications
• Built-in proof of closure (POC) input and undervoltage detection for enhanced equipment protection

Specifications

• Model: LME75.811A1PKG-PRG2
• Mains Voltage: AC 120 V (50/60 Hz)
• Operating Mode: Continuous
• Safety Level: SIL3 (Safety Integrity Level 3)
• Cycle Life: Rated for 250,000 start cycles (approx. 10 years of service life)
• Components: LME75.000A1 (base), PME75.811A1 (program module), AGG3.710 (connector plug set)
• Weight: Approximately 5.0 lbs
• Power Consumption: Approximately 3 VA

Applications

• Supervision of gas-fired or oil-fired forced draft burners in industrial and commercial environments
• 1-stage or modulating burners with direct or pilot ignition
• Industrial thermoprocessing equipment in compliance with EN 746-2 standards
• Large capacity heating systems and boilers requiring high-reliability flame safeguards
• Systems utilizing self-checking UV scanners like the QRA7 series or infrared scanners like the QRI2 series